| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously materialize durability against wear of a cushioning sheet material and maintenance of soft feeling as a cushion, by making an intermediate sheet material thinner than the cushioning sheet material, in the superimposed structure of the cushioning sheet material, the intermediate sheet material, and the core buffer material, or by making for example the thickness of the cushioning sheet material not less than 5 mm and not more than 40 mm in the superimposed front sheet material, the cushioning sheet material, and the core buffer material.SOLUTION: In a cushion 1, at least a cushioning sheet material 2, an intermediate sheet material 3 and a core buffer material 4 are superimposed in this order. The core buffer material 4 has a wire shaped body 5 which supports a load imparted through the cushioning sheet material 2 and the intermediate sheet material 3. The intermediate sheet material 3 is thinner than the cushioning sheet material 2, with a basis weight M3 of the intermediate sheet material 3 not less than 20 g/mand not more than 85 g/m, and with a thickness D3 of the intermediate sheet material 3 not less than 100 μm and not more than 1,000 μm. A thickness D2 of the cushioning sheet material 2 is not less than 5 mm and not more than 40 mm. A depletion thickness D2' of the cushioning sheet material 2 at the compression of 20 g/cmmay be not less than 3 mm and not more than 20 mm.SELECTED DRAWING: Figure 1 |
